I have 1 15" MTX RFL subwoofer which is 2000 rms, this is one loud a@@ sub. If you want the loudest this is want you want. I also have a reconing kit so if you blow the sub you can rebuild it. I am asking $400.00 for the sub. brand new it cost me $650.00. FOr the reconing kit I would like $38.00. You can e-mail me at paintball9908@hotmail.com.